Isolated anion vacancies and vacancy pairs were found to contribute to anion mass transport, as deduced from the anion tracer self-diffusivities in pure or doped (up to 2.5mol%Cd) specimens (table 31). The data were analyzed by using the Lidiard-Debye-Hückel theory. The diffusion parameters were normal, and both pairs and single vacancies made comparable contributions to anion diffusion. Anion Self-Diffusion in AgCl and AgBr by Both Single Vacancies and Vacancy Pairs. A.P.Batra, L.M.Slifkin: Journal of Physics - C, 1976, 9[6], 947-58

 

Table 32

Diffusivity of 58Co in AgCl

 

Temperature (C)

D (cm2/s)

441.1

2.10 x 10-8

421.5

1.04 x 10-8

396.7

4.14 x 10-9

370.8

1.62 x 10-9

348.8

6.98 x 10-10

328.1

2.91 x 10-10

310.6

1.50 x 10-10

293.0

7.04 x 10-11

269.0

2.42 x 10-11

249.9

1.07 x 10-11

232.3

4.77 x 10-12

206.9

1.17 x 10-12